Phyrexian Triniform + Nim Deathmantle + Krark-Clan Ironworks

Phyrexian Triniform

Nim Deathmantle

Krark-Clan Ironworks

How it works

1. Sacrifice Phyrexian Triniform to Krark-Clan Ironworks to add CC.
2. Phyrexian Triniform and Nim Deathmantle both trigger.
3. Resolve Phyrexian Triniform's ability first, creating three Golem artifact creatures.
4. Sacrifice two Golems to Krark-Clan Ironworks to add 4 C total.
5. Resolve the Nim Deathmantle trigger, paying the 4 to return Phyrexian Triniform to the battlefield with Nim Deathmantle equipped.
6. Repeat for infinite tokens and mana.